Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. document genres
7. [documents by form]

Narrower term/s

• perpetual calendars
• religious calendars[+]
  • devotional calendars
  • menologions
  • calendars of saints
  • ordos (religious calendars)
  • calendars of relics [NP]
  • fasts and feasts (liturgical calendar)
• fasti

Anotations

Scope note:

Registers of days or other contrivances for reckoning days, months, years, etc., such as a table showing the division of a given year into its months, weeks, days, years, or other divisions of time. A calendar may include important astronomical data, ecclesiastical or other festivals, and other events belonging to specific days. For calendric systems of dates, see children under "."